Since recovery operations on the river began Monday, authorities have retrieved most of the crashed jet ... some parts of the helicopter, including the right engine and tail rotor.

Editor's note: This page reflects news of the plane crash near DC on Thursday ... for some parts of the helicopter, including the right engine and tail rotor. Officials said the wreckage is ...

A 3-D model created by The Times visualizes the helicopter pilots’ field of view minutes before a fatal crash with a jet in ... speed and the pitch of their rotor blades, all while monitoring ...

Investigators found that problems with the bearing in the tail rotor of the helicopter began a sequence of failures leading to the crash.

told the inquest that a duplex bearing on the tail rotor -- which contributes to stability -- became "seized and locked" before the helicopter crashed and burst into flames. "Our conclusion was ...

A Customs and Border Protection helicopter ... the crash. “The helicopter came to rest on its left side in a field of dry brush…,” the NTSB said in its report. Three of aircraft’s rotor ...